package com.hc.security;

import com.hc.bean.Result;
import com.hc.bean.ResultUtil;
import com.hc.utils.JsonUtil;
import com.hc.utils.JwtUtils;
import net.minidev.json.JSONUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.Authentication;
import org.springframework.security.web.authentication.logout.LogoutSuccessHandler;
import org.springframework.security.web.authentication.logout.SecurityContextLogoutHandler;
import org.springframework.stereotype.Component;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * 退出登录成功处理器
 * 注销：将用户本地localStorage中的Token信息设置为null
 *
 * @author 梁云亮
 */
@Component
public class MyLogoutSuccessHandler implements LogoutSuccessHandler {

    @Autowired
    private JwtUtils jwtUtils;

    @Override
    public void onLogoutSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException, ServletException {
        if (authentication != null) {
            new SecurityContextLogoutHandler().logout(request, response, authentication);//手动退出
        }

        response.setContentType("application/json;charset=UTF-8");
        ServletOutputStream outputStream = response.getOutputStream();
        //设置Header中的token信息为空

        Result result = ResultUtil.success(200,"注销成功", null);

        outputStream.write(JsonUtil.obj2String(result).getBytes("UTF-8"));

        outputStream.flush();
        outputStream.close();
    }
}
